Research On The Management Analysis And Application Of SCD Documents For An Intelligent Substation

With the development of grid technology, intelligent substation technology has been widely used in the world scope, it is based on IEC 61850 communication standard, adopt a method of the top-down to substation automation system in system hierarchy, function definitions and object modeling, the purpose is to realize the interoperability between different manufacturer's equipment. Substation configuration description file(SCD) describes the station all intelligent electronic device instance configuration and communication parameters, the configuration of communication between intelligent electronic devices and the connection information such as the signal, so the adjustment of the new station and has put into operation station of the late maintenance upgrade, etc., the consistency of SCD file with the device configuration information, is make basic communication. Therefore, the standardization and the correctness of SCD file is intelligent substation safe operation of the key factors. However in the process of intelligent substation construction in our country at present, still lack of unified and effective management control means, that means when the SCD file according to the need to upgrade or modified by other party, the scene of the operator is difficult to quickly find information and check it.For SCD file is not easy to understand, time-consuming and laborious to recognize and check the changes, this issue from engineering practice to study a set of SCD file visual management with analysis and decision system. It will achieve SCD file visualization analysis, graphical display SCD file virtual secondary loop and related communication parameters and other related information; by loading the IEC61850 standard test system and based on text format syntax check word patterns and characteristics, inspection on virtual terminal connections normative; adopt the text file comparison algorithm based on position and graphical comparison of technology, the new and old SCD file automatically matching, then showing the virtual terminal connection and communication parameters such as the change of information in a form of a list; through expert assessment system according to the result of examination system and the comparison system, the report generated automatically on the results of equipment maintenance strategies to improve the efficiency of operation and maintenance of maintenance personnel, to ensure the quality of project commissioning and commissioning period.Finally with Nanchang 220 kV ShengMi and Ganzhou 110 kV ShuangLong transformer substation as examples, the system and its results of this research will be engineering application analysis of the various functions of the system illustrated in detail, the finally result verify the effectiveness of the system, to ensure the total testing and commissioning are carried out orderly, comprehensive, efficient, large scaled back the scene debugging cycle, better guarantee the quality and the progress of the commissioning works.